Recently, even the wheat live because technology has set off a heat wave, people live platform is built this way, then how to build a platform with a live broadcast system source code it? We must first solve is to achieve video compression coding technology, then the transcoding of encoded content, then, take a closer look. 1, coding for convenience of mobile video plug flow, pull stream and a storage, usually video coding compression techniques to reduce the volume of the video, because the phone or the camera collects the volume of the original audio and video is very large, need to go through code compression process to improve transmission efficiency. Difficulty is coding compression technology, currently used more than is H.264 technology, but the new H.265 technology is more advanced, higher compression capability, so that the original only half the bandwidth required to play the same video quality, low to 1.5Mbps network can transmit 1080p high-definition video, the H.265 codec technology has been completely replace the trend of H.264. Currently on the market based on time served successively and the use of situation, CDN star field of H.265 technology offers the earliest time, more users, it should be relatively industry-leading, followed by mountain cloud also provides H. 265 coding technology. 2, the content transcoded by the transcoder encoding the desired, before the adaptation needs of different platforms, such as the user pushes a high flow rate (for example, 720P) is converted into lower resolution real-time (for example, 360P) to accommodate a flow play end of demand. If you want to build their own real-time transcoding system, the cost will be very high, an 8-core devices can only stream real-time road turns 10, if a normal live streaming platform 1000 road, we need 100 devices, plus late operation and maintenance costs, the company general too much, so basically would choose to live cloud computing service providers, currently the first-line cloud service providers offer real-time transcoding. 3, Kam Wong Kam Wong is mandatory regulatory policy, in order to secure a live product Kam Wong became a necessary part of using technical means to Kam Wong is a mobile broadcast platform for the inevitable adoption of the program. Wong Kam services available on the market, there are two main programs: the first is the video capture, and then the picture Kam Wong, Wong Kam returned results and scores. Typical enterprises Ali (green network), spectrum technology, they currently support direct incoming video, after the server returns the analysis results. Typically, by the service system in accordance with the access service discriminator discriminator yellow yellow result live stream controls such as cutting the live stream, banned account number. The second is the CDN binding directly to the live stream analysis, the recognition result divided pornography, sexual suspected, sexy and normal, live streaming service control system directly according to the recognition result. Typical enterprise is Viscovery, the advantage of this program is to ensure better real-time performance, the disadvantage is to be deployed to the CDN or your own room, the cost is relatively higher. There is also a live one-stop solution provider, their approach is that users only need to configure the service console Wong Kam can, each way live streaming real-time review for each application. In the console, real-time cloud service providers will return Kam Wong result, users can view live and direct shots pornography violations interface, and can be controlled live streaming, live streaming off the problem. 4, screenshots, recording, other countries made it clear watermark, and all live must fight watermark and playback retain more than 15 days. This use to watermark, screenshots and recording capabilities, these functions are relatively simple, essentially, live cloud services providers can offer. There is also a live one-stop solution provider, their approach is that users only need to configure the service console Wong Kam can, each way live streaming real-time review for each application. In the console, real-time cloud service providers will return Kam Wong result, users can view live and direct shots pornography violations interface, and can be controlled live streaming, live streaming off the problem. 4, screenshots, recording, other countries made it clear watermark, and all live must fight watermark and playback retain more than 15 days. This use to watermark, screenshots and recording capabilities, these functions are relatively simple, essentially, live cloud services providers can offer. There is also a live one-stop solution provider, their approach is that users only need to configure the service console Wong Kam can, each way live streaming real-time review for each application. In the console, real-time cloud service providers will return Kam Wong result, users can view live and direct shots pornography violations interface, and can be controlled live streaming, live streaming off the problem. 4, screenshots, recording, other countries made it clear watermark, and all live must fight watermark and playback retain more than 15 days. This use to watermark, screenshots and recording capabilities, these functions are relatively simple, essentially, live cloud services providers can offer.
Reproduced in: https: //juejin.im/post/5d0ae3ce6fb9a07edb394c3c